Model EFSASIN-V – Silencer DEFINITION Silencers for controlling the noise produced by the expansion of a gas or steam at elevated pressures in the moment of the atmosphere discharge. APPLICATIONS These silencers are used to reduce the noise generated by high velocity gas flow, such as steam vents, safety and relief valves, blowing systems and purge points. GALILEO 8, POL. IND. CAN ESTELLA 08635 ST ESTEVE SESROVIRES, BARCELONA, SPAIN T +34 902 889 438 / FAX +34 902 889 439 This information is subjected to changes

Model EFSASIN-V – Silencer SPECIFIC DESIGN Each silencer is custom designed according to the noise attenuation required. Its dimensions are directly proportional to the desired noise reduction and the gas mass flow. Noise reduction depends on the silencer length while the diameter of the silencer depends on gas flow. These silencers are designed for a maximum speed that minimizes noise and ensures structural integrity. The silencers are structurally designed to withstand wind and snow loads. In relation to earthquakes, silencers are usually equipped with a lateral support system that allows design...

Model EFSASIN-V – Silencer The absorbent plenum is an expansion chamber designed to smooth and homogenize the flow of gas prior to the reduction of acoustic energy to be obtained in the dissipative stage. Designs and manufactures these absorbent plenums to reduce the acoustic radiation through the outer shell of these silencers. In the dissipative stage the fluid passes through a system of multitube, crowns, or absorbent baffles, achieving significant reductions in noise by viscous friction depending on the design and the depth of the silencer (higher length means greater silencer acoustic attenuation...

Model EFSASIN-V – Silencer Flanges: are welded to the silencer inlet pipe, these can be normalized according to ANSI B16.5, DIN, and SAE. Expansion joints: normally, provided upon request, these silencers have expansion joints (vertical and horizontal), which can be directly welded to the inlet tube or provided with flanges (the choice of the compensator will depend on the estimated tension for all piping where is located the silencer). Support: the silencers come equipped with a system of supports (brackets) as they will be supported in the structure. Support legs (upon request) Lifting Lugs:...

Model EFSASIN-V - Silencer To optimize the design and manufacture of the vent silencers is indispensable to have the following information: b. Volumetric flow rate (m3/h), or otherwise: • Mass flow (kg/s) • Molecular weight, density • Fluid velocity (m/s) d. Operating pressure in the silencer inlet e. Atmospheric pressure of the installation area a. Sound pressure level required, and place for measurement b. Installation height of silencer c. Sound spectrum (if known) CALCULATION PARAMETERS Some types, depending on the acoustic attenuation requirements, are showed below: GLOBAL ATTENUATION >...